Yes my argument had nothing at all to do with soil tilling itsself. I said nothing like that, so your response does not seem to relate to what i had said.Actually, the "natural ground" is a heart of stone.
God has to replace our heart of stone (stone cannot yield crops) with a heart of flesh (which is living tissue). God gives us life, that's regeneration.
And I think it was christ_undivided who had the good point that we are made from the dust of the Earth, and so the soil would not represent only our heart to the exclusion of the rest of our body.
My grandfather was a farmer, and my dad and uncles grew up on that farm. And soil doesn't "till" itself.
Rocky soil doesn't clear its own rocks.
Pathways don't break themselves up.
And every one of Jesus' hearers would have known that.
What I said: Jesus calls the soil our heart. A heart does not till itsself